03 Jun 2026
When it is time to replace a water heater, most Singapore households choose between an instant (tankless) heater and a storage (tank) heater. Both deliver hot water reliably — the right choice depends on how you live.
Instant water heaters
An instant heater warms water on demand as it flows through the unit, so it never runs out.
- Compact — ideal for HDB bathrooms with limited space
- Hot water immediately, with no waiting for a tank to heat
- Lower standby energy use
- Best suited to one outlet at a time
Storage water heaters
A storage heater keeps a tank of water hot and ready, usually mounted in the ceiling space or service area.
- Can supply multiple outlets at once — handy for larger families
- Steady temperature even during heavy use
- Needs space for the tank and time to reheat once emptied
How to choose
Think about three things:
- Space: tight bathrooms favour an instant heater
- Demand: more bathrooms and simultaneous use favour storage
- Budget: compare the unit, installation and running costs together
Whichever you pick, correct installation by a licensed plumber matters for safety and longevity. If you are unsure which suits your home, we are happy to advise and supply the right unit.